The most obvious difference between petrol and diesel vapor is the presence of a greater abundance of long chain aliphatic CHs in the diesel vapor.

• 汽油蒸汽和柴油蒸汽最大的区别是柴油蒸汽中长链大分子的挥发性C-H化合物所占的比例远远高于汽油蒸汽。